The agreed time was approaching, and Daniel was getting impatient, frequently shuttling between me and Zoe and the others to check the progress. However, Zoe and the others didn't tell him anything except "Almost done," leaving him frustrated and anxious.

The twenty-two drones were finally completed with round-the-clock work. According to Han Yu's instructions, I reprogrammed these twenty-two drones, setting them to automatically fly diagonally upwards at a 45-degree angle at the same speed after startup.

With only three days left until the one-month deadline, Fatty and the others finally emerged from that dark place. They were pale and clearly hadn't rested well, especially Fatty, who had visibly lost weight.

I quickly went up to Fatty and asked, "How did it go? Is the problem solved?"

Fatty winked and said, "Don't even mention it, let's prepare to run."

"Ah..." I didn't know what to do for a moment.

At this time, Zoe patted me and said, "Fatty's joking with you. Han Yu came up with a solution, and it's been verified multiple times. No problem, don't worry."

Hearing Zoe's words, I felt a little relieved, and then clenched my fist and waved it in the air a few times at Fatty to show my dissatisfaction.

Zoe and Han Yu went back to the tent to rest, but Fatty didn't go with them. He put one hand on my shoulder and said to me mysteriously, "I'll tell you a secret I just found out."

Every hair on my body stood on end, and my ears perked up, ready to hear Fatty's exclusive secret.

Fatty glanced sideways at the guards who were constantly watching us behind us, hesitated for a moment, and whispered:

"I know the cause of Dr. Schiller's death."

—I don't give a damn how Schiller or Shiller died. Hearing the word "Schiller," I instantly lost interest. I'm only concerned about my own life and death now. Who cares about others' lives and deaths? I raised my leg to leave.

Fatty grabbed me back with his big hand: "Young Master, listen to me!"

I rolled my eyes at him and replied impatiently, "Speak quickly!"

"The layout of area A and area B is actually the same.

The interior looks like square, regular walls on the surface, but in reality, one wall is disguised as a 'droplet'.

I suspect the 'droplet' is alive, it can change its appearance and shape according to different environments.

Daniel said that the wall disguised by the 'droplet' is actually a door. If the droplet isn't removed, you can never enter the inner part of the underground palace.

After studying the properties of the 'droplet', Dr. Schiller came up with a solution. He planned to bombard the 'droplet' with a high-energy laser device. He calculated that the high-energy laser device could vaporize the 'droplet' in an instant. For this bombardment, the Z organization specially brought in more than a dozen large energy-storage generators, and these devices could only make the laser device work for one second, but one second was enough.

Guess what.

Just after the laser was fired, the droplet covering the door was indeed vaporized, and the door to the passage was revealed. Dr. Schiller immediately told others the good news through communication equipment.

Everyone thought that Dr. Schiller had successfully destroyed the 'droplet', so they rushed to area A to see Dr. Schiller's victory.

However, when everyone came to the entrance of area A and looked inside, Dr. Schiller, his assistant, and all the equipment were gone. The bombarded 'wall' still stood there intact.

So, everyone started shouting and looking for Dr. Schiller through the communication equipment, but no one responded.

Another assistant of Dr. Schiller didn't think much and walked directly from the mine to area A. However, a strange thing happened: the moment he entered the room, he disappeared."

"How did you know about this?" I asked Fatty.

"Because Little Yu also thought about this plan, but as soon as she proposed it, several scientific expedition members rejected it, and they told us about the accident along the way," Fatty replied. "By the way, they call this phenomenon 'backflow seepage'. It was the backflow that not only failed to blast away the 'droplet' but also allowed the interior of area A to be completely occupied by the 'droplet'. The 'seepage' mentioned in the walkie-talkie at that time meant this."

"I see." After understanding the whole story, I felt that Fatty's news was still useful.

"Poor Dr. Schiller died for us once." Fatty put his hands together and pretended to be pious.

Zoe and Han Yu slept for a whole day without eating or drinking. Although Fatty didn't sleep that long, he was also leisurely and unhurried. I didn't know what these three were up to, but it seemed that everything had been arranged properly.

A month had passed, and it was the day Han Yu fulfilled her promise.

In the morning, the sun had just risen, and the faint sunlight shone on the snow of the mountains, making the snow look crystal clear, as if waking up from a dream.

The grim reaper Daniel forcibly opened our tent with his men. A chill swept in, and we were awakened by the cold wind in the valley.

"It's time to hand in your homework, little girl," Daniel said to Han Yu with a droopy face.

After we had a quick breakfast, we followed Daniel to the vicinity of Devil's Gulch. Han Yu directed the scientific expedition members to prepare twenty-two drones and connect them. The drones were tied with fishing lines and connected to steel nails driven into the ground near the camp.

Han Yu said to the researchers, "When I give the command below later, you will start them together and let the drones fly towards the gulch."

I told Han Yu that I could assist them in the camp, but Han Yu insisted that I go down to the underground base with her.

After the work on the ground was ready, we were taken underground by Daniel. After passing through the dark mine tunnel, we arrived at area B.

The equipment in area B was still the same as when I first saw it, without any change. I didn't know what method Han Yu would use to open the door hidden behind the "droplet."

Han Yu said to Daniel, "I don't know what the environment inside the underground palace is like yet, but after entering, you can't shoot or destroy anything. If you break anything and cause the 'droplet' to seep in, no one will survive."

Daniel conveyed Han Yu's meaning to the team of more than ten people composed of scientific expedition members and guards behind him.

Han Yu then said, "I can only control the 'droplet' to recede for five seconds. If it exceeds this time, the 'droplet' will recover, and the door will naturally disappear."

Han Yu stared at Daniel and asked, "Are you sure you want to go in?"

Daniel impatiently raised his gun and pointed it directly at Han Yu's head: "Stop talking nonsense and open the door. Your work is done."

Zoe sighed secretly when she saw Daniel's tyrannical appearance and whispered, "He's crazy, he's really crazy."

At this time, Fatty tugged at my sleeve and leaned close to my ear, saying, "Young Master, listen to my instructions later. Don't think about anything, don't hesitate, follow me, and do whatever I say."

I looked back at him a little inexplicably, not understanding what he meant for a moment.

Seeing me in a daze, Fatty added, "Trust me."

The four of us stood in front of the wall formed by the "droplet." Han Yu said to the walkie-talkie, "Underground is ready."

The researchers in the camp: "Ground is ready."

Han Yu: "You can start the drones."

The researchers in the camp: "Drones have been started."

Everyone in the area B chamber held their breath, waiting for a miracle to appear.

About thirty seconds later, the "droplet" suddenly changed shape and quickly climbed up. The wall seemed to fade, and an arched door two meters wide and three meters high gradually appeared in front of us. Just as I was surprised, Fatty suddenly shouted hysterically, "Run!"

Then Fatty dragged me, followed by Han Yu and Zoe, towards the arched door.